A large area of cloudiness and disorganized showers and thunderstorms is associated with a tropical wave located several hundred miles south of Guatemala. Environmental conditions are expected to gradually become more conducive for the development of a broad low pressure system south of the Gulf of Tehuantepec by Friday. Additional development will be possible over the weekend and into early next week while the disturbance moves slowly westward to west-northwestward well offshore the coast of Mexico. * Formation chance through 48 hours…low…near 0 percent. * Formation chance through 5 days…low…20 percent.